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AGRICULTURAL SCIENCE (Objective Questions And Answers)


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THEORY QUESTIONS
WAEC SYLLABUS

WASSCE 2017

Objectives



1. The branch of agriculture which deals with the production of fruits is called

A. pomology

B. floriculture.

C. otericufture.

D. nematology.


2. One advantage of cooperative farming is that it

A. allows farmers to have small and scattered plots.

B. enables individual farmers to acquire loans from the banks.

C. enable farmers to raise needed capital.

D. facilitates the use of local tools.


3. Which of the following statements is not a problem associated with land tenure system through inheritance?

A. Family members have small land holdings

B. Family members have right to free use of land

C. Non-family members cannot inherit land

D. Farm mechanization is restricted


4. A farmland measures 50m x 50m. Determine its area in hectares.

A. 25 ha.

B. 2.5 ha.

C. 0.25 ha.

D. 0.025 ha.


Study the illustration of farm implements below and use it to answer

questions 5, 6, 7 and 8.


ANSWERS



5. The part of the implements labelled I is called

A. disc.

B. beam.

C. disc scraper.

D. plough share.


6. The part of the implements which makes horizontal cuts into the soil and uproots weeds is labelled as

A.I.

B. II

C. Ill

D. IV.


7. The function of the part labelled II is to

A. make horizontal cuts into the soil.

B. make vertical cuts into the soil.

C. roll over obstacles.

D. remove soil from the disc.


8. Which of the labelled parts provides balance to the implement?

A.I

B. ll

C.HI

D.IV


9. A farming system in which different types of crops are grown in succession, in a definite order on the same piece of land is termed

A. mixed farming.

B. land rotation.

C. continuous cropping.

D. crop rotation.


10. Land use for agriculture in West Africa is influenced by the flowing factors except

A. population density.

B. topography.

C. fallowing.

D. climatic conditions.


ANSWERS
ANSWERS

11. A social factor which affects land availability and use is

A. temperature.

B. soil pH.

C. light intensity and duration.

D. culture of the people.


12. The following are climatic factors affecting agricultural production except

A. rainfall.

B. relative humidity.

C. temperature.

D. topography.


13. Predators are used by farmers to

A. control pests.

B. induce flowering in plants.

C. protect the soil.

D. hasten fruit ripening.


14. Which of the following agents is not associated with chemical weathering?

A. Oxidation

B. Pressure

C. Hydrolysis

D. Carbonation


15. Which of the following statements is not correct about soil texture?

A. Soils with fine particles have higher water-holding capacity than coarse soils.

B. Fine-textured soils are warm soils and coarse-textured soils are cool soils.

C. The Effect of leaching in coarse-textured soils is greater than that in fine-textured soils.

D. Fine-textured soils have higher nutrient-holding capacity than coarse-textured soils.



16. Inhibition of root and fruit formation are deficiency symptoms of

A. iron.

B. nitrogen.

C. chlorine.

D. phosphorus,


17. tie carbon cycle, carbon dioxide is used by crops for

A. photosynthesis.

B. transpiration.

C. composition.

D. respiration.


18. Hood irrigation is used for the cultivation of

A. watermelon.

B. swamp rice.

C oil palm.

D. coconut.


19. The presence of excess water in the colloids of soil particles is known as.

A. drainage

B. water logging

C. irrigation

D. leaching.


Study the illustration below and use it to answer question 20.





20. The crop roots illustrated above are that of a

A. legume.

B. cereal.

C. tuber.

D. spice.


ANSWERS

21. If rows of crops are spaced 1.0 m apart with one seed sown per stand, determine the spacing between stands to obtain a plant population of 40,000 plants per hectare.

A. 0.25 m.

B. 0.45 m.

C. 0.50 m.

D.l.00 m.


22. The correct sequence of pre-planting operations is

A. clearing -> stumping -> ploughing -» harrowing.

B. stumping - ploughing -» harrowing -> clearing.

C. bulldozing -» harrowing -> stumping -> ploughing.

D. clearing -> bulldozing -> stumping -> harrowing.


23. Heat treatment of oil palm seeds before sowing helps to

A. mobilize nutrients for the embryo.

B. harden the mesocarp.

C. break embryo dormancy.

D. improve disease resistance.


24. Imported plants are expected to be

A. vaccinated.

B. improved upon.

C. treated.

D. quarantined


25. A breeding method which involves the production of heterozygous populations from homozygous lines is

A. inbreeding.

B. introduction.

C. selection.

D. hybridization:


ANSWERS

26. A raw material that could be obtained from the forest is

A. margarine.

B. honey.

C. mutton.

D. butter.


27. Which of the following methods of plant propagation is limited to plants which root easily?

A. Grafting and cutting

B. Layering and cutting

C. Budding and layering

D. Grafting and layering


28. Which of the following practices is not a way of maintaining ornamental plants?

A. Pruning

B. Weeding

C. Watering

D. Harvesting


29. Which of the following pairs of diseases attack coffee?

A. Mosaic and smut

B. Smut and midge

C. Rust and mosaic

D. Rust and leaf spot


30. Insect-pests of crops could be controlled by

A. cover cropping.

B. mulching.

C. crop rotation.

D. organic manuring.


ANSWERS

31. Which of the following insect-pests does not attack cotton?

A. Aphid

B. Cotton stainer

C. Weevil

D. Pinkbollworm


32. Which of the following practices is an example of a cultural weed control method?

A. Use of insects

B. Mowing

C. Application of herbicides

D. Mulching


The diagram below illustrates the digestive tract of a farm animal. Study it and use it to answer questions 33, 34 and 35.





33. The farm animal associated with the digestive tract illustrated above is

A. turkey.

B. cattle.

C. pig.

D. goat.


34. Digestion of protein starts in the part labelled

A.l.

B.ll.

C. Ill

D. IV.


35. Which of the following enzymes is not secreted by the part labelled III?

A. Pepsin

B. Amylase

C. Lipase

D. Trypsin


Study the illustrated poultry equipment and use them to answer questions 36, 37 and 38.


ANSWERS



36. Which of the illustrated equipment is not used in a brooder house?

A. I

B. II

C. Ill

D.IV


37. Which of the following equipments could be used in place of the equipment labelled II in the management of chicks?

A. Incubator

B. Feeder

C. Electric bulb

D. Eggcandler


38. Which quality of eggs is associated with the equipment labelled I?

A. Size

B. Fertility

C. Colour

D. Price


Study the illustration below and use it to answer question 39.





39. What is the name given to the identification method illustrated above?

A. Tagging

B. Neck chaining

C. Ear notching

D. Branding


40. A fanner collects 800 eggs from a laying stock of 1,200 birds per day. Determine the laying percentage of the stock.

A. 150%

B. 67%

C. 50%

D. 33%


ANSWERS

41. By-products of livestock used as feed ingredients in poultry ration include.

A. hides and hoofs.

B. blood and bones.

C. feathers and fur.

D. skin and bones.


42. The practice of mating closely related animals is called

A. cross breeding.

B. hybridization.

C. in-breeding.

D. out-breeding.


Study the farm animal parasite illustrated below and use it to answer questions 43 and 44





​43 The parts labelled I, II and III form the

A. proglottide.

B. rostellum.

C. sucker.

D. scolex.


44. The parasite illustrated in the diagram above obtains nutrients from the host through.

A. osmosis.

B. diffusion.

C. capillarity.

D. egestion.


45. In fish farming, Clarias is introduced to a pond stocked with Tilapia in order to

A. regulate the population of Tilapia.

B. compete with Tilapia for feed.

C. check pests in the pond water.

D. regulate the turbidity of the pond water.


ANSWERS

46. The demand for agricultural produce is generally

A. infinite.

B. inelastic.

C. unitary.

D. static.


47. Subsidies are given to farmers in the form of

A. reduced prices of inputs.

B. provision of social infrastructure.

C. high tariff on imported inputs.

D. short term loans. Use the table below to answer question


Study diagram below and use it to answer questions 48





48. What will be the excess demand over supply of mangoes?

A. 50 baskets

B. 40 baskets

C. 20 baskets

D. 10 baskets


49. Which of the following agents is not involved in agricultural marketing?

A. Commodity boards

B. Money lenders

C. Retailers

D. Middlemen


50. Agricultural extension teaching methods are classified on the basis of

A. teaching materials.

B. topics to be taught.

C. attitude of farmers.

D. audience size.  



WASSCE 2017 AGRICULTURAL SCIENCE

OBJECTIVE ANSWERS

1.A 2.C 3.B 4.C 5.B 6.D 7.D 8.C 9.D 10.C

11.D 12.D 13 A 14.B 15.B 16.D 17.A 18.B 19.B 20.A

21.D 22.A 23.C 24.C 25.D 26.B 27.B 28.D 29.C 30.C

31.C 32.D 33.C 34.A 35.D 36.A 37.C 38.B 39.A 40.B

41.C 42.D 43.A 44.A 45.A 46.A 47.A 48.A 49.B 50.D


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